MacOS

This instructions work for either M1 or intel CPU

1. check your architecture executing arch on the terminal app
2. app store > install xcode
3. https://github.com/Homebrew/brew/releases/latest > install homebrew
4. install xcode essentials?
5. run brew shellenv:

   fdo@MacBook-Air ~ % cat .zprofile 
   export HOMEBREW_PREFIX="/opt/homebrew";
   export HOMEBREW_CELLAR="/opt/homebrew/Cellar";
   export HOMEBREW_REPOSITORY="/opt/homebrew";
   export PATH="/opt/homebrew/bin:/opt/homebrew/sbin${PATH+:$PATH}";
   export MANPATH="/opt/homebrew/share/man${MANPATH+:$MANPATH}:";
   export INFOPATH="/opt/homebrew/share/info:${INFOPATH:-}";
   

6. open new terminal

compile

# Install dependencies 
#  maybe missing boost-mpi boost-build, llvm for intel?
$ brew install boost eigen gcc libopenmpt
$ cd Cell2FireC
$ make clean -f makefile.macos
$ make -f makefile.macos

Something failed? If homebrew was installed for all users (instead of the default), choose your makefile:

Rename the compiled the binary Cell2Fire so the toolbox-plugin uses it:

ext=`python3 -c "import platform;print(f'.{platform.system()}.{platform.machine()}')"`
cp Cell2Fire Cell2Fire$ext
cp Cell2Fire$ext ~/.local/share/QGIS/QGIS3/profiles/default/python/plugins/fireanalyticstoolbox/simulator/C2F/Cell2FireC/.

# makefile.macos:
/opt/homebrew/include

# makefile.macos-latest:
/usr/local/include

Further adjustments probably start at editing directories in makefile

Notes when installing LVM

==> llvm
To use the bundled libc++ please add the following LDFLAGS:
  LDFLAGS="-L/opt/homebrew/opt/llvm/lib/c++ -Wl,-rpath,/opt/homebrew/opt/llvm/lib/c++"

llvm is keg-only, which means it was not symlinked into /opt/homebrew,
because macOS already provides this software and installing another version in
parallel can cause all kinds of trouble.

If you need to have llvm first in your PATH, run:
  echo 'export PATH="/opt/homebrew/opt/llvm/bin:$PATH"' >> ~/.zshrc

For compilers to find llvm you may need to set:
  export LDFLAGS="-L/opt/homebrew/opt/llvm/lib"
  export CPPFLAGS="-I/opt/homebrew/opt/llvm/include"

TBD Next steps:

1. Make a macos-universal binary https://github.com/manojkarthick/macos-universal-binary-action
2. When github enables arm64 arch, compile using matrix actions https://github.com/kryptokrona/njord/actions/runs/3602943270/workflow

Notes c++ on global variables

fls in Kitral.cpp was colliding with system strings.h:fls

# from /Library/Developer/CommandLineTools/SDKs/MacOSX12.sdk/usr/include/strings.h:78
/* Darwin extensions */
#if __DARWIN_C_LEVEL >= __DARWIN_C_FULL
__BEGIN_DECLS
int	 ffsl(long) __OSX_AVAILABLE_STARTING(__MAC_10_5, __IPHONE_2_0);
int	 ffsll(long long) __OSX_AVAILABLE_STARTING(__MAC_10_9, __IPHONE_7_0);
int	 fls(int) __OSX_AVAILABLE_STARTING(__MAC_10_5, __IPHONE_2_0);

---